The main task of ballistic missile design is to choose missile's design parameter to make sure that ballistic missile can satisfy tactic target and restrictive condition.

弹道导弹初步设计的主要任务就是寻优选择导弹的设计参数，从而使导弹满足战术指标和限制条件。

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The alleged use of special operations troops in the raid could signal a shift away from the controversial U.S.tactic of relying on long-range missile assaults to take out terrorist targets.

VOA: standard.2009.09.15